server/helpers/custom-jsonld-signature.ts

   1 import * as AsyncLRU from 'async-lru'
   2 import * as jsonld from 'jsonld/'
   3 import * as jsig from 'jsonld-signatures'
   4
   5 const nodeDocumentLoader = jsonld.documentLoaders.node()
   6
   7 const lru = new AsyncLRU({
   8   max: 10,
   9   load: (key, cb) => {
  10     nodeDocumentLoader(key, cb)
  11   }
  12 })
  13
  14 jsonld.documentLoader = (url, cb) => {
  15   lru.get(url, cb)
  16 }
  17
  18 jsig.use('jsonld', jsonld)
  19
  20 export { jsig }